President Barack Obama appointed Vice-President Joe Biden to lead a commission on gun control. Photograph: Mandel Ngan/AFP/Getty Images

New federal gun control legislation has been declared all but dead on arrival this week. Gridlock in the US senate, where a supermajority of 60 votes is needed to move most legislation these days, is proving to be an insuperable barrier to any meaningful change in the wake of the Newtown, Connecticut, massacre. Meanwhile, the National Rifle Association is pushing its controversial agenda to place armed guards in every school, increasing the number of guns in our society and further entrenching gun culture.

While the senate is perhaps the worst bellwether for public sentiment, recent polls indicate majority support for stricter controls, with an overwhelming 85 to 90% of respondents from across the political spectrum supporting universal background checks. As the horror of the Newtown massacre recedes in time, polls show that support for a more aggressive ban on assault weapons is slipping slightly, as could be predicted.

Time is on the side of those opposing gun control, most notably the NRA. The longer this drags out, the less likely anything will get done. That is why President Barack Obama's announcement of a commission, just four days after the Sandy Hook Elementary School massacre in Newtown, was a harbinger of failure and inaction. Commissions take time. It didn't help that the chairperson he appointed, Vice-President Joe Biden, encouraged lawless, reckless gun use, saying:

"If you want to protect yourself, get a double-barrel shotgun. Have the shells for a 12-gauge shotgun, and I promise you as I told my wife – we live in an area that's wooded and somewhat secluded – I said, 'Jill if there's ever a problem, just walk out on the balcony here, walk out, put that double-barrel shotgun and fire two blasts outside the house. I promise you whoever's coming in is not going.' You don't need an AR-15. It's harder to aim; it's harder to use. And in fact, you don't need 30 rounds to protect yourself. Buy a shotgun. Buy a shotgun."

Too much of what Biden says is written off as gaffes and bluster. But this is coming from the chair of the president's own commission on gun control. In his state of the union address, Obama got rousing applause when he insisted:

"The families of Newtown deserve a vote. The families of Aurora deserve a vote. The families of Oak Creek and Tucson and Blacksburg and the countless other communities ripped open by gun violence, they deserve a simple vote."

"I think he sent a pretty clear, if coded, signal in his State of the Union address when his emotional refrain was the proponents of gun control deserve a vote. He kept saying that over and over again. He didn't really demand that members of his own party in the Senate, which his party controls, pass the legislation in question."

Even the proposed legislation is a shadow of what genuine gun control would look like. Senator Dianne Feinstein's Assault Weapons Ban of 2013, by her own admission, exempts 2,271 weapons. According to a 2007 survey conducted by GunPolicy.org, of the 645m guns worldwide in civilian hands, more than 270m of them are in the US – almost half of all civilian guns on the planet. The same survey reports that US military and police guns combined number just over 4m. We are truly a nation of guns.

The moment to pass gun control was when the national attention was riveted on the massacre at Sandy Hook, the brutal slaying of 20 children and six adults. Before the broken bodies of those victims fade from memory, our broken body politic must be mended. What is needed is a vigorous grassroots movement, to provide the leadership so lacking in Washington DC.